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17
USING FIELD STRENGTH READINGS
TO TUNE YOUR RADIO AND ANTENNA
You can use field strength measurements to monitor the effec-
tiveness of changes you make to your radio and antenna
while
you make them. Changes you might make include:
• Installing a new antenna or antenna cable
• Adjusting the length of an antenna
• Changing the antenna mount on your vehicle
• Adjusting your radio’s transmitter
You do not need to connect the meter to the antenna or the ra-
dio to measure field strength, but you will need two people.
While someone presses the radio’s transmit key, you will need
to note the readings you see on the meter.
Important:
Be sure to follow any radio service regulations that
limit the amount of time you can transmit without a break or sta-
tion identification.
1. Remove the supplied short wire antenna attached to the
bottom of the meter, then insert it into
FS ANT
on top of the
meter.
2. Set
CALIBRATION/FS/SWR
to
CALIBRATION/FS
.
3. To calibrate the meter, have your helper select a channel
or frequency on your transmitter and hold down its trans-
mit key. Tell the helper
not
to speak into the microphone.
21-533.fm Page 17 Thursday, August 5, 1999 3:47 PM